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An intelligent system for vessels structural reliability evaluation

Michala, A. L. and Barltrop, N. and Amirafshari, P. and Lazakis, I. and Theotokatos, G. (2017) An intelligent system for vessels structural reliability evaluation. In: Life-Cycle of Engineering Systems. CRC Press/Balkema, Boca Raton, FL., pp. 1891-1898. ISBN 9781138028470

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Abstract

An intelligent system is proposed within INCASS (Inspection Capabilities for Enhanced Ship Safety) project for evaluating ship structural reliability and assisting in fatigue damage and structure response assessment. The system combines hydrodynamic, finite element and structural reliability models.. The hydrodynamic analysis model is not discussed in this paper. The finite element model input is a mesh for the midship part of the vessel. Finally, the in-house structural reliability model input is the calculated output of the previous model as well as models for estimating crack development and propagation, corrosion growth and fatigue loading. The output includes the probability of failure for all the investigated components versus time which can be used to assess safe operation through the developed decision support software. The database can receive information from various sources including inspection and robotic systems data. The case study of a capsize bulk carrier the presents structural evaluation process.